{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "511280302",
    "entityType": "User",
    "nonce": "0x61abb46deaf1160b6320d59b060d040539afc99615a9bdd4e9a9aa9770f710b5",
    "signature": "0x2935d6eb1f06bf6c7662904bf3b904a405266eb0386c9123f47cebe868c5b9830817f544b7d980f8c7deb65492e10d2b721749e5053687f38903b12d75f00f901b",
    "signer": "0x6Af6D40d1d0B48D79D2bd3E3c8f0a45540130c0F",
    "userId": "89433"
  }
}